Need help with my inverter set up in enclosed trailer

I recently bought an enclosed trailer that had an AIMS PWRIC300012w inverter paired with 2 Enersys sbs 190f batteries. Over the weekend I overloaded the inverter and the overload protection didn't work as it should have. It popped and smoked etc.....I took it apart to find 5 blown fuses and a soldered connector blown apart. Replaced fuses and re soldered connector and it blew as soon as I put power to it, so im guessing its trashed. Batteries are still good and I need another inverter/charger to put In it. Trailer has 4 6" light bars for interior lights, pioneer premier cd/dvd/nav headunit hooked to small flat screen tv. All I need to be able to run is lights, tv, dvd, cell phone chargers and air mattress pump. What size inverter/charger do I need and if you know of a particular unit that would work for me please let me know. Their is so many out there and I have no clue where to start. Also are those batteries overkill or are they good for what im doing? Also on the inverter I am looking for something reasonable, im not looking to spend $1k-2K on one as most places we stay has power hookups.

Maybe just replace it with the same unit. They are roughly $450 & common. It doesn't sound like you "overloaded" it to me judging by your list of devices. Maybe just went bad or something go to ground ? I would check all wiring for grounds before hooking up another one. 👍

I'm gonna stay away from the AIMS brand due to all the bad reviews. Main thing I need a good way to make sure I'm keeping those batteries in good shape cause after looking them up their is no way id pay that much for them so once they are shot they won't be getting replaced lol. Supposed to be damn good batteries I just wanna make sure I don't run them all the way down and hurt them.

I charge them before every ride we go on. I've never had any problem. Pickett is the hardest place on them. Every where else you can plug in. You can get you a solar charger to put on your batteries while your camping.

http://www.amazon.com/Xantrex-Prowatt-SW1000-Sinewave-Inverter/dp/B002I04A74/ref=sr_1_1?s=automotive&ie=UTF8&qid=1414694812&sr=1-1&keywords=inverterThis is what's in mine. For what you want to do it would be a good choice. They also sell a few accessories for it if you want to hard wire it in like I did. If you want to run a microwave you will want to go to the next size up. just let me know if you have questions on it. If you look in my build thread for my cargo trailer there is some pictures of the inverter.

BTW be careful with cheap ones to run a lcd and DVD you need a true sine wave inverter. A lot of stuff has problems with modified wave inverters. Which is what most of the cheap hardware store ones are.